EM357-RTB Ember, EM357-RTB Datasheet - Page 105
![IC RF TXRX ZIGBEE 192KB 48QFN](/photos/14/19/141904/636-48-qfn_sml.jpg)
EM357-RTB
Manufacturer Part Number
EM357-RTB
Description
IC RF TXRX ZIGBEE 192KB 48QFN
Manufacturer
Ember
Specifications of EM357-RTB
Frequency
2.4GHz
Data Rate - Maximum
250kbps
Modulation Or Protocol
802.15.4 Zigbee
Applications
General Purpose
Power - Output
5dBm
Sensitivity
-100dBm
Voltage - Supply
2.1 V ~ 3.6 V
Current - Receiving
26mA
Current - Transmitting
31mA
Data Interface
PCB, Surface Mount
Memory Size
192kB Flash, 12kB RAM
Antenna Connector
PCB, Surface Mount
Operating Temperature
-40°C ~ 85°C
Package / Case
48-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
Q5059680
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SC1_UARTCFG
UART Configuration Register
Bitname
SC_UARTAUTO
SC_UARTFLOW
SC_UARTODD
SC_UARTPAR
SC_UART2STP
SC_UART8BIT
SC_UARTRTS
31
23
15
0
0
0
7
0
SC_UARTAUTO
30
22
14
6
0
0
0
Bitfield
[6]
[5]
[4]
[3]
[2]
[1]
[0]
SC_UARTFLOW
29
21
13
5
0
0
0
Access
RW
RW
RW
RW
RW
RW
RW
Set this bit to enable automatic nRTS control by hardware (SC_UARTFLOW must also be
If parity is enabled, specifies the kind of parity.
Number of stop bits transmitted.
Description
set). When automatic control is enabled, nRTS will be deasserted when the receive FIFO
has space for only one more byte (inhibits transmission from the other device) and will be
asserted if it has space for more than one byte (enables transmission from the other
device). The SC_UARTRTS bit in this register has no effect if this bit is set.
Set this bit to enable using nRTS/nCTS flow control signals. Clear this bit to disable the
signals. When this bit is clear, the UART transmitter will not be inhibited by nCTS.
0: Even parity.
1: Odd parity.
Specifies whether to use parity bits.
0: Don't use parity.
1: Use parity.
0: 1 stop bit.
1: 2 stop bits.
Number of data bits.
0: 7 data bits.
1: 8 data bits.
nRTS is an output to control the flow of serial data sent to the EM35x from another
device. This bit directly controls the output at the nRTS pin (SC_UARTFLOW must be set
and SC_UARTAUTO must be cleared). When this bit is set, nRTS is asserted (pin is low,
'XON', RS232 positive voltage); the other device's transmission is enabled. When this bit is
cleared, nRTS is deasserted (pin is high, 'XOFF', RS232 negative voltage), the other
device's transmission is inhibited.
SC_UARTODD
28
20
12
4
0
0
0
Final
8-30
SC_UARTPAR
27
19
11
3
0
0
0
SC_UART2STP
26
18
10
0
0
0
2
Address: 0x4000C85C Reset: 0x0
EM351 / EM357
SC_UART8BIT
25
17
0
0
9
0
1
120-035X-000G
SC_UARTRTS
24
16
0
0
8
0
0
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